小数乘以整数

1、 12.1 15150150015000 5555(1) (2) 101001000 ( 10100100021553?1 16.55 ?()6.5+6.5+6.5+6.5+6.56.55 6.55?56.56.55 ?( ) 10.94 636 8.4152 52.05 4.957?2 65 5 65 10 6 5 5 53 2. 5 3 2 510 6.556.510656.5101032510 149.76 1 145 ( ) 0 .7 4 ( ) 3 3 2 2( ) 1 3 5 ( ) 1 4 823.4584 4.625 0.4156 1.085305 0.007624 2.35

2、(1)?(2)?P.43412310.36 0.84 7.20 4.280.254 3.63 4.35 0.6920.7 0.39 0.824343.840.04?1 26.50.50.82 ? 1? ?6.50.5 6.50.82 1 6.50.5 0.516.50.56.56.50.46.50.76.50.82 2(1) 6.50.56.50.82 ?()6. 5 10 6 5 0. 5 10 53.2 5 100 3 2 56. 5 ( ) 6 50. 8 2 ( ) 8 2 1 3 0 1 3 05 2 0 5 2 05. 3 3 0 ( ) 5 3 3 0 00(2) ?():6.0

3、50.82?6.0520.82? ? l2?(3) P.33 670.3 2.146.21(1)?(2)2340 . 5 8 6 . 2 5 2 . 0 4 4. 2 0 . 1 8 2 81. 1 6 5 0 0 0 1 6 3 22. 3 2 6 2 5 4 0 83. 4 3 6 1 1 2 5 0 5 7 1 2:1203l1:010.96 70.08 1.870 0.242 1.40.30.126 1.65 40.25 600.520.40.3 4.872.3 5.0620.37 0.580.963(1)?(2)?002044130.0560.15(1)(2) ? 0. 0 5 6

4、0. 1 5(3) ? 0 218.52.4(1) ? ?1(2)3(1) l?(2) 11?(30.1510.05642.4118.52.4(3)1140.320.25 2.61.0814. 8.0 4 5.0 0 6 0.0 3 5 4.6 0.0 0 7 0.1 62 2 8 1 2 3 5 0 4 2 2 1 01. 4 2 0 8 3 51. 6 4 8 9 2 5 6 0:12:1216 125 0.8 9.4 20.70.9 0.040.2 0.80.053.10.3 0.160.5 1.70.031.80.04 2.14 0.126?356.7382154.6 0.370.94

5、3.47841.2329.212039.16 0.786.147.58110.039+1.75 10-5.29 0.0152.042403217560.9756 10.9414.251.14.25 31.41.2631.42113313501.824310.240.06120.40.240.06120.360.421.51.814.611.44.6+1.41.594.61.88.289+8.2817.28:12:11.20.3 0.70.5 0.210.8 1.80.51-0.82 1.3+0.74 1.258 0.250.40.40.4 0.891 0.110.6 800.052()2.09

6、54.3071.86421?2?3149.20.92230.9249.245(1)?(2)?(3)?(4)?(5)?671.0.80.91.70.452.2.1414(1)(2)1351.50182.50150.3853.7243.402 113 1.503552.5 159.542.523.583.059 3.578 3.574 3.583 3.585: : 11.020.2 0.450.6 0.80.125 0.75900.250.4 0.0670.1 0.10.08 0.850.4212560 30785 2504200 3)13000.180.45230.450.183004567 1

7、 50.41.951.9 3.760.2525.850.40.05 0.977625.825.2 26.7776 50.41.951.9 3.760.2525.898.281.9 0.9425.896.38 26.74 24.21.692. 50.770.46.13.63.93.6 319.46.12.3 3.254.767.8 18.10.923.93 () 125954 2532 448+648 102562 ab=ba a(bc)(ab)c a(b+c)=ab+ac2()3P.93:0.71.21.20.7 0.80.50.40.80.50.42.43.60.52.40.53.60.5410.254.7842?3?0.254.7840.2544.78 14.78 4.784500.130.2 1.250.70.8 0.32.50.450.65201201200+1 0.652010.65200+10.652000.65130+0.65130.6560.78100.5 1.5102 1.22.5+0.82.510.0340.50.6 1020.4512312 0.650.14 0.981.3 ? ?346.3102 9.82.90.22.90.80.0212.5513.006004.00320?256.72.41360.8 28.710.9312.83 0.5820.714.